Demodicosis
También conocido como: Canine Demodicosis, Demodectic Mange
En resumen
Demodicosis, also known as demodectic mange, is a common canine skin disease caused by an overpopulation of microscopic Demodex mites. Learn how to recognize the signs—such as hair loss and skin redness—how veterinarians diagnose it using deep skin scrapes, and the treatment steps needed to clear the infection.
TL;DR. Sobrecrecimiento de acaros Demodex en el folículo: alopecia e irritación; requiere diagnóstico y tratamiento prolongado (hasta 6 meses).
Los Demodex son residentes normales del folículo; la enfermedad aparece cuando se multiplican en exceso.
¿Qué es?
Overgrowth of normal Demodex mites in hair follicles (demodectic mange). Not highly contagious adult-to-adult. Classify localized vs generalized; juvenile-onset vs adult-onset (often secondary to immune suppression).
Causas y factores de riesgo
Immune control fails: stress, endoparasites, poor nutrition, immunosuppressive drugs, underlying disease (e.g. Cushing, hypothyroidism, cancer). Higher risk: Rat Terrier, English Bulldog, Chinese Shar-Pei.
Signos a vigilar
- Alopecia (cardinal)
- Scaling, erythema (common)
- Secondary pyoderma; pododemodicosis (occasional)
- Fever, anorexia if deep infection (rare; emergency)
Alopecia parcheada en cara y ojos es un signo clasico.
Cómo lo diagnostican los veterinarios
Deep skin scrape (gold standard: pinch then scrape to capillary bleed). Hair plucks near eyes/paws. Biopsy if scrapes negative (esp. thick-skinned breeds like Shar-Pei).
El raspado cutaneo profundo es el estandar de oro.
Opciones de tratamiento
Localized juvenile: often self-limiting; treat predisposing factors. Generalized: long course (up to 6 months). Amitraz dips or Ivermectin (caution MDR1 herding breeds). Continue past clinical cure until 2 consecutive negative scrapes weeks apart.
Pronóstico
Localized juvenile: excellent. Generalized juvenile: good with consistent therapy. Adult-onset: depends on underlying disease.
Prevención
Support immunity, parasite control, minimize stress, cautious immunosuppressants. Do not breed dogs with generalized demodicosis.
Cuándo llamar al veterinario
Any patchy alopecia or red/scaly skin. Emergency: fever, anorexia, severe depression, deep oozing foot lesions.
Fuentes
- Small Animal Dermatology: A Color Atlas and Therapeutic Guide, Page 32, 132, 135.
My highlights & notes
Signos y síntomas
Razas de mayor riesgo
Cómo se diagnostica
- Deep skin scrapeEstándar de referencia
- Hair-plucks
- Skin biopsy
Enfoques de tratamiento
El tratamiento debe recetarlo un veterinario colegiado según tu mascota. Las dosis concretas no se muestran a propósito.
Preguntas frecuentes
What is Demodicosis?
Demodicosis, also known as demodectic mange, is a common canine skin disease caused by an overpopulation of microscopic Demodex mites. Learn how to recognize the signs—such as hair loss and skin redness—how veterinarians diagnose it using deep skin scrapes, and the treatment steps needed to clear the infection.
What are the symptoms of Demodicosis?
Hair loss、Skin redness、Scaling、Comedones、Greasy seborrhea、Darkening of the skin、Lichenification、Papules
How is Demodicosis diagnosed?
Deep skin scrape、Hair-plucks、Skin biopsy
How is Demodicosis treated?
El tratamiento debe recetarlo un veterinario colegiado según tu mascota. Las dosis concretas no se muestran a propósito.
Fuentes
- 皮膚病 教科書點子書 Small-Animal-Dermatology-A-Color-Atlas-and-Therapeutic-Guide · p. 135
- 皮膚病 教科書點子書 Small-Animal-Dermatology-A-Color-Atlas-and-Therapeutic-Guide · p. 135
- 皮膚病 教科書點子書 Small-Animal-Dermatology-A-Color-Atlas-and-Therapeutic-Guide · p. 132
- 皮膚病 教科書點子書 Small-Animal-Dermatology-A-Color-Atlas-and-Therapeutic-Guide · p. 32
Este artículo es educación general y no sustituye el consejo veterinario profesional. Si tu mascota está mal, consulta a un veterinario.
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